add Python package configuration

[nominatim.git] / nominatim / db / utils.py

diff --git a/nominatim/db/utils.py b/nominatim/db/utils.py
index d9154ed90160b5b0a4c01e72fc6df5de4a9002cf..57048da3f20e0a2e612b496ac99242b44155b4e7 100644 (file)
--- a/nominatim/db/utils.py
+++ b/nominatim/db/utils.py
@@ -92,6 +92,11 @@ class CopyBuffer:
         return self
 
 
+    def size(self) -> int:
+        """ Return the number of bytes the buffer currently contains.
+        """
+        return self.buffer.tell()
+
     def __exit__(self, exc_type: Any, exc_value: Any, traceback: Any) -> None:
         if self.buffer is not None:
             self.buffer.close()
@@ -115,7 +120,10 @@ class CopyBuffer:
 
     def copy_out(self, cur: Cursor, table: str, columns: Optional[Iterable[str]] = None) -> None:
         """ Copy all collected data into the given table.
+
+            The buffer is empty and reusable after this operation.
         """
         if self.buffer.tell() > 0:
             self.buffer.seek(0)
-            cur.copy_from(self.buffer, table, columns=columns) # type: ignore[arg-type]
+            cur.copy_from(self.buffer, table, columns=columns)
+            self.buffer = io.StringIO()